fix(local): ensure to set login to true in local (fixes #135) (#295)

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

lua/avante/providers/init.lua

@@ -173,6 +173,10 @@ E.setup = function(opts)
 
   opts.provider.setup()
 
+  if opts.provider["local"] then
+    vim.g.avante_login = true
+  end
+
   -- check if var is a all caps string
   if var == M.AVANTE_INTERNAL_KEY or var:match("^cmd:(.*)") or opts.provider["local"] == true then
     return